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WO2017135705A1 - Cellule solaire de pérovskite hybride organique-inorganique - Google Patents

Cellule solaire de pérovskite hybride organique-inorganique Download PDF

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Publication number
WO2017135705A1
WO2017135705A1 PCT/KR2017/001146 KR2017001146W WO2017135705A1 WO 2017135705 A1 WO2017135705 A1 WO 2017135705A1 KR 2017001146 W KR2017001146 W KR 2017001146W WO 2017135705 A1 WO2017135705 A1 WO 2017135705A1
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solar cell
electrode
organic
layer
perovskite solar
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Korean (ko)
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박현민
김연환
이동훈
천민승
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LG Chem Ltd
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F10/00—Individual photovoltaic cells, e.g. solar cells
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/10—Semiconductor bodies
    • H10F77/16—Material structures, e.g. crystalline structures, film structures or crystal plane orientations
    • H10F77/169—Thin semiconductor films on metallic or insulating substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/20—Electrodes
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/20—Electrodes
    • H10F77/206—Electrodes for devices having potential barriers
    • H10F77/211—Electrodes for devices having potential barriers for photovoltaic cells
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/30—Coatings
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/30—Coatings
    • H10F77/306—Coatings for devices having potential barriers
    • H10F77/311—Coatings for devices having potential barriers for photovoltaic cells
    • H10F77/315—Coatings for devices having potential barriers for photovoltaic cells the coatings being antireflective or having enhancing optical properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Definitions

  • the present invention relates to an organic-inorganic perovskite solar cell having a high open voltage and excellent energy conversion efficiency, including a charge generating layer capable of improving hole transport characteristics.
  • the solar cell refers to a battery that generates current-voltage using a photovoltaic effect of absorbing light energy from sunlight to generate electrons and holes.
  • Si np diode-type silicon
  • GaAs gallium arsenide
  • the initial dye-sensitized solar cell structure is a simple structure in which a light-absorbing dye is adsorbed on a porous photoanode on a transparent electrode film that is electrically connected to light, and then another conductive glass substrate is placed on top and filled with a liquid electrolyte. It is.
  • the working principle of dye-sensitized solar cells is that when dye molecules chemically adsorbed on the surface of a porous photocathode absorb solar light, the dye molecules form electron-hole pairs, and electrons are conductive bands of the semiconductor oxide used as the porous photocathode. It is injected and transferred to the transparent conductive film to generate a current.
  • the transparent conductive film is mainly FKK Fluor ine doped Tin Oxide (ITK) or Indium doped Tin Oxide (IT0), and nanoparticles having a wide bandgap are used as the porous photocathode.
  • the dyes are particularly well absorbed and have a higher energy level in the LUMOGowest unoccupied molecular orbital than the conduction band energy levels of the photocathode material, making it easier to separate excitons generated by light.
  • organic photovoltaic cells which have been studied in earnest since the mid-1990s, are organic materials having electron donor (D or sometimes called hole acceptor) and electron acceptor (A) characteristics. It consists of When a solar cell made of organic molecules absorbs light, an axtone is formed, and the axtone moves to the DA interface to separate charges, electrons move to an acceptor, and holes move to a donor. Photocurrent is generated. The excitons generated by the electron donor are usually within 10 nm, so the photoactive organic material cannot be stacked twice, resulting in low light absorption and low efficiency.
  • the organic solar cell has a big problem in that the BHJ structure is deteriorated by moisture in the air or oxygen and its efficiency is rapidly lowered, that is, the stability of the solar cell. As a way to solve this problem can be increased by introducing a complete sealing technology, but there is a problem that the price increases.
  • Michael Gratzel a professor of chemistry at Lausanne University in Switzerland, invented the dye-sensitized solar cells in 1998.
  • the present invention is to provide an organic-inorganic perovskite solar cell having a high open voltage and excellent energy conversion efficiency.
  • the hole transport region includes a hole transport layer and a charge generating layer, the charge generating layer comprises a compound represented by the following formula (1) or (2),
  • the thickness of the charge generating layer is 10 nm to 70 nm
  • To 3 ⁇ 4 Ri is cyano (-CN) hydrogen, halogen, each independently, nitro (- N0 2), sulfonyl (-S0 2 R u), sulfoxide (-S0R u), sulfonamide (_S0 2 NR u ), Sulfonate (-S0 3 R n ), ester -COORn), amide (-C0NHR u or -CONRnR ⁇ ), amino (-NH 2 , -NHRn, — NRuR 12 ), d- 12 alkyl, d- 12 60 is an aryl, or d-60 heteroaryl, alkoxy, d- 12 alkenyl, C 6
  • 60 is an aryl, or d-so heteroaryl, - Rii and R 12 are each independently selected from (12 alkyl, C 6
  • perovski te used in the present invention is named after the Russian mineralogist Lev Perovski, wherein the cations (A and M) and anions (X) are composed of the chemical formula of AMX 3 , It refers to a material having the same structure as CaTi0 3 found in Ural acid, which is the first perovskite-like substance, and in the case of the perovskite used in the solar cell as the present invention, a cation corresponding to A is usually monovalent ammonium. Ions are used, and thus the term "organic-inorganic hybrid" is used.
  • an organic-inorganic hybrid perovskite solar cell absorbs solar light
  • electrons of HOMO of the perovskite compound of the light absorption layer are transferred to LUM0 to form excitons.
  • the excitons move to the electron transport layer along the LUM0
  • holes due to the formation of the excitons move to the hole transport layer along the HOMO, whereby the electron-hole pair is separated.
  • the electrons and holes thus separated move to the first and second electrodes, and light conversion occurs to function as a solar cell. Therefore, in order to improve the light conversion efficiency of the solar cell, a path for smooth movement of electrons and holes should be formed, and the movement speed of electrons and holes in the electron transporting layer and the hole transporting layer should be much faster.
  • the hole transfer layer and the charge generation layer are simultaneously provided between the light absorbing layer and the electrode, so that the difference in energy level between each layer interface is reduced, so that the seed hole transfer characteristics are improved.
  • the charge generat ion layer is a layer capable of generating charge according to absorption of sunlight separately from the light absorber in the light absorbing layer, and means a p-type hole generating layer. Therefore, by providing the charge generating layer, the energy level between the hole transport layer, the charge generating layer and the electrode interface as compared with the case where no charge generating layer is provided. The difference can be reduced, so that hole transport characteristics in the solar cell can be improved.
  • the thickness of the charge generating layer is 10 nm to 70 nm. If the thickness of the charge generation layer is less than 10 nm, there may be a problem that the hole transfer characteristic effect is not sufficient to form a layer. If the thickness of the charge generation layer is more than 70 nm, there is a problem of loss of charge due to resistance. There may be. Therefore, when the organic-inorganic hybrid perovskite solar cell is provided with a charge generating layer having a thickness of 10 nm to 70 nm, while improving the hole transfer characteristics, it has an effect of improving the hole transfer by securing an appropriate photocurrent moving distance.
  • the hole transport layer and the charge generating layer may be disposed in contact with each other continuously.
  • the hole transport layer may be disposed adjacent to the light absorbing layer.
  • the hole transport layer and the light absorbing layer may be continuously contacted with each other.
  • the charge generating layer may be disposed adjacent to the light absorbing layer.
  • the solar cell may further include an electron transport region including an electron transport layer. The electron transport region may be interposed between the electrode and the light absorbing layer that is not provided with the hole transport region.
  • the first electrode may be an anode
  • the second electrode may be a cathode
  • the hole transport region may be interposed between the light absorbing layer and the second electrode.
  • the solar cell has a structure in which a first electrode (anode) / electron transport layer / light absorbing layer / hole transport layer / charge generation layer / second electrode (cathode) is sequentially stacked, or black
  • the solar cell has a structure in which a first electrode (anode) / electron transport layer / light absorbing layer / charge generation layer / hole transport layer / crab 2 electrode (cathode) is sequentially stacked Can be.
  • the first electrode may be a cathode
  • the second electrode may be an anode
  • the hole transport region may be interposed between the first electrode and the light absorbing layer.
  • the solar cell has a structure in which a first electrode (cathode) / charge generation layer / hole transport layer / light absorbing layer / electron transport layer / second electrode (anode) is sequentially stacked, or black
  • the solar cell may have a structure in which a first electrode (cathode) / hole transfer charge / charge generation layer / light absorbing layer / electron transfer layer / second electrode (anode) is sequentially stacked.
  • a solar cell 100 includes a first electrode 10, an electron transport layer 20, a light absorbing layer 30, a hole transport layer 40, and a charge generating layer. 50 and the second electrode 60 have a structure in which they are sequentially stacked.
  • the solar cell of the present invention is provided with a hole transport layer and a charge generating layer between the light absorbing layer and the electrode at the same time to reduce the difference in energy level between the interface of each layer to improve the hole transport characteristics.
  • FIG. 1 shows that the solar cell of the present invention.
  • a charge generation layer 50 is provided between the hole transport layer 40 and the giant 12 electrode 60 to provide the hole transport layer 40 and the charge generation layer 50. And the energy level difference between the interface of the second electrode 60 can be reduced, thereby improving the hole transport characteristics in the solar cell.
  • the charge generating layer 50 and the hole transport layer 40 including the compound represented by Formula 1 or 2 are in contact with each other, the electrons of the HOMO of the hole transport layer 40 are in contact with each other. It may move to LUM0 of the generation layer 50. These electrons pass through the light absorbing layer 30 and the electron transport layer 20. It may move to the first electrode 10, ie the anode.
  • holes generated by the movement of electrons in the HOMO of the hole transport layer 40 may pass through the charge generation layer 50 to move to the second electrode 60, that is, the cathode. Therefore, in the solar cell 100, as compared with the case where no charge generation layer is provided, the hole transfer layer electrons move to the anode through the charge generation layer LUM0 and as the cathode of the holes generated in the HOMO of the hole transfer layer. Due to the movement of, electrons and / or holes may move faster. As a result, by providing the charge generating layer 50, the open-circuit voltage and the light conversion efficiency of the solar cell can be improved as compared with that otherwise.
  • the hole transfer layer (40) Even a metal having a work function having a large difference from the H0M0 energy level of Nf may be used as the second electrode 60.
  • the LIM0 energy level of the charge generation layer 50 may have a range of more than the H0M0 energy level of the hole transport layer 40 or less than the work function of the second electrode 60.
  • the H0M0 energy level of the hole transport layer 40 may be -4.0 to -8.0 eV
  • the work function of the second electrode 60 may be -3.0 to -8.0 eV.
  • the LUM0 energy level of the charge generating layer 50 may be -3.0 to -6.0 eV.
  • the LIM0 energy level of the charge generation layer 50 may be -4.0 to -5.2 eV.
  • hole transport characteristics may be improved.
  • the compound represented by Chemical Formula 1 or 2 may satisfy the LUM0 energy level.
  • the H () M0 energy level (or IP (ionization potential) and LUM0 (or Electron Affinity) energy levels are devices or calculation methods known in the art when organic or inorganic materials are measured in the form of films. Can get by.
  • HOMO energy levels can be measured using UPS ultra-violet photoelectron ion spectroscopy) or AC-2 or AC1 3 equipment from Riken Keiki (Japan).
  • LUM0 energy level can be measured using inverse photoemission spectroscopy (IPES), or calculated by subtracting the optical band gap from this value after measuring the HOMO energy level.
  • IPES inverse photoemission spectroscopy
  • Formula 1 to are each independently cyano (-CN), nitro (-N0 2 ), sulfonyl (-S0 2 R u ), phenyl, or ethenyl, R u is phenyl, Wherein phenyl or ethenyl may be substituted with one or more cyano (-CN) or nitro (-N0 2 ).
  • R u is phenyl
  • phenyl or ethenyl may be substituted with one or more cyano (-CN) or nitro (-N0 2 ).
  • Representative examples of the compound represented by Formula 1 are as follows: [Formula 1-1]
  • Ph in Formula 1-2 means phenyl.
  • 3 ⁇ 4 to 3 ⁇ 4 may be each independently hydrogen or halogen.
  • 3 ⁇ 4 to 3 ⁇ 4 may be identical to each other.
  • Representative examples of the compound represented by Formula 2 are as follows: [Formula 2-1]
  • the first electrode 10 may be a transparent electrode including a conductive transparent substrate.
  • At least one conductive transparent substrate selected from the group consisting of zinc oxide (AZO: aluminum doped zinc oxide), and zinc oxide (ZnO) may be used, but may be used without limitation as long as it is commonly used in the solar cell field.
  • the crab electrode 10 may have a multi-layer structure having a single layer or a plurality of layers.
  • An electron transport layer 20 may be disposed on the first electrode 10.
  • the electron transport layer 20 may be a porous metal oxide, preferably having a porous structure by the metal oxide particles.
  • the metal oxide include Ti0 2 , Sn0 2 l ZnO, Nb 2 0 5 , Ta 2 0 5> W0 3 , W 2 0 5 , ln 2 0 3> Ga 2 0 3 , Nd 2 0 3 , PbO, or CdO may be used, but is not limited thereto.
  • the light absorbing layer 30 may be disposed on the electron transport layer 20.
  • the light absorbing layer 30 includes a light absorbing body capable of receiving sunlight to generate electron-hole pairs (axtones).
  • the perovskite compound used as the light absorber may include a compound represented by Formula 11, but is not limited thereto.
  • A is a monovalent organic ammonium ion or Cs +
  • M is a divalent metal ion
  • the perovskite compound may include a compound represented by Formula 12 or 13 below:
  • R 2 and i 2 are each independently CQ alkyl, C 3 - 20 aryl, and, - 20 cycloalkyl, or C 6
  • R 23 is hydrogen, or ( 20 alkyl, M is Cu 2+ , Ni 2+ , Co 2+ , Fe 2+ , Mn 2+ , Cr 2+ , Pd 2+ , Cd 2+ , Ge 2+ , Sn 2+ , Pb 2+ and Yb 2+ At least one divalent metal ion selected from the group consisting of
  • Each X is independently one or more halogen ions selected from the group consisting of F, Cr ⁇ Br " and ⁇ .
  • the hole transport layer 40 may be disposed on the light absorbing layer 30.
  • the hole transport layer 40 may include spiro OMeTAD (2, 2 ', 7, 7'-tetrakis). -( ⁇ , ⁇ -di-p-methoxyphenylamine) -9,9'-spirobipuloene)), PTAA (poly (triamine)), poly (4-butylphenyl-diphenyl-amine) P3HT (Poly (3′nucleosilthiophene)), PCPDTBT (poly [2,1,3-benzothiadiazole-4,7-diyl [4,4-bis (2-ethylnucleosil) -4H-cyclopentai!
  • PVK poly (N-vinylcarbazole)
  • HTM-TFSI (1-nuxyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide
  • Li-TFSI lithium bis (trifluoromethane Sulfonyl) imide
  • tBP tert-butylpyridine
  • PD0T PSS (poly (3,4-ethylenedioxythiophene) poly (styrenesulfonate)
  • MDM0-PPV poly [2-methoxy-5) -(3 ', 7'-dimethyloctyloxyl)] -1,4-phenylene vinylene
  • MEH-PPV poly [2-methoxy-5- (2' ethyl liquid siloxy) -P-phenylene Vinylene]
  • P30T poly (3-octyl thiophene)
  • PSBTBT poly [(4,4'-bis (2-ethylnucleosil) dithieno [3,2-b: 2 ', 3'-d] silol) -2,6-diyl-alt- (2,1 , 3-benzothiadiazole) -4, gdiyl]
  • PCDTBT poly [[9- (1-octylnonyl) -9H—carbazole-2,7-diyl] -2,5-thiophendiyl- 2,1,3-benzothiadiazole-4,7-diyl-2,5-thiophendiyl
  • PFB poly (9,9'-dioctylfluorene-co-bis ( ⁇ , ⁇ '-
  • PSS poly (3,4- ethylenedioxythiophene) poly (styrenesulfonate) may comprise one or more hole transport materials selected from the group consisting of Among them, spiro-OMeTAD or PTM is preferable in view of hole transport and interfacial properties, and the hole transport layer 40 including the hole transport material may have a HOMO energy level in the above-described range.
  • a second electrode 60 facing the first electrode 10 may be disposed on the hole transport layer 50.
  • the second electrode 60 may be made of aluminum (A1) and silver (Ag). , Platinum (Pt), Tungsten (W), Copper (Cu), Molybdenum (Mo), Gold (Au), Nickel (Ni), Indium (In), Rutinium (Ru), Rhodium (Rh), Iridium (Ir ), Osmium ( 0s) and palladium (Pd) may include at least one metal selected from the group consisting of aluminum (A1) may be used as the second electrode 60.
  • the work function of the aluminum (A1) electrode Is about -4.28 eV
  • the difference between the work function of the second electrode 60 and the H0M0 energy level of the hole transport layer 40 is large, the hole transport characteristics can be improved by the interposed charge generating layer 50
  • the LUM0 energy level of the compound represented by Chemical Formula 1-1 corresponds to ⁇ 4.4 eV so that the second electrode At 60
  • use of an aluminum (A1) electrode may be preferred.
  • an aluminum (Al) electrode is preferable from the viewpoint of life and cost compared with a gold (Au) or silver (Ag) electrode.
  • the second electrode 60 when gold (Au) is used as the second electrode 60, it may have a work function lower than the LUM0 energy level of the charge generation layer 50 described above may not be smooth hole transfer, high There may be difficulties in commercialization due to price.
  • gold (Au) when gold (Au) is used as the second electrode 60, it may have a work function lower than the LUM0 energy level of the charge generation layer 50 described above may not be smooth hole transfer, high There may be difficulties in commercialization due to price.
  • silver (Ag) when iodide is used as the perovskite compound, silver iodide may be generated, thereby shortening the life of the solar cell. Therefore, by using the aluminum (A1) electrode, it is possible to manufacture a solar cell having excellent light conversion efficiency and being commercially available at low cost.
  • the organic-inorganic perovskite solar cell 100 may have a thickness of about 0.1 ⁇ to about 10 ⁇ , but may not be limited depending on the field of application.
  • the thickness of the electron transport layer 20 may be about 1 nm to about 500 nm.
  • the thickness of the light absorbing layer 30 may be about 100 nm to about 1,000 nm.
  • the hole transport layer 40 may have a thickness of about 1 nm to about 500 nm.
  • each step is performed by vacuum deposition, spin coating, vapor deposition, cast, LB (Langmuir-Blodgett), inkjet printing laser printing, laser thermal transfer (LITI) in consideration of the structure of the material and layer to be formed. It may be carried out using a variety of methods known in the art such as. ⁇ Effects of the Invention ⁇
  • the solar cell which concerns on this invention can improve the opening voltage and energy conversion efficiency of a solar cell by providing the charge generation layer which can improve a hole transport characteristic.
  • FIG. 1 shows a schematic structure of a solar cell according to an embodiment of the present invention.
  • Figure 2 shows the current density according to the voltage of the solar cell manufactured in Example 2 and Comparative Example 1 of the present invention.
  • Example 1 The following examples are merely provided to more easily understand the present invention, and the contents of the present invention are not limited thereto.
  • FT0 substrates of 25 mm ⁇ 25 mm size were laser etched and washed with acetone and ethanol. Subsequently, the washed FTO substrate was further UV treated for 30 minutes, and then 0.1 M [(CH 3 ) 2 CH 0] 2 Ti (C 5 H 7 0 2 ) 2 (ti tanium di isopropoxide bis (acetyl) acetonate)) coated a 70 nm thick layer with 1-butanol solution and a 200 nm thick layer using a Ti3 ⁇ 4 paste having a 40 nra diameter to form an electron transfer layer.
  • CHgNlfePbluBro.g solution was spin coated on the electron transport layer to form a light absorption layer having a thickness of 600 nm, and spiro-OMeTAD solution in which Li-TFSI and tBP were mixed was spin coated on the light absorption layer to form a hole having a thickness of 150 nm.
  • a transfer layer was formed.
  • the compound represented by the following Chemical Formula 1-1 was vacuum deposited on the hole transport layer to form a charge generation layer having a thickness of 10 nm, and a solar cell was manufactured by vacuum deposition of an A1 electrode on the charge generation layer.
  • the LUM0 energy level of the compound represented by Formula 1-1 is -4.4 eV.
  • a solar cell was manufactured in the same manner as in Example 1, except that the thickness of the charge generating layer of Example 1 was adjusted as in Table 1 below. Comparative Example 1
  • a solar cell was manufactured in the same manner as in Example 1, except that the charge generation layer was not formed in Example 1. Comparative Examples 2 and 3
  • a solar cell was manufactured in the same manner as in Example 1, except that the thickness of the charge generating layer of Example 1 was adjusted as in Table 1 below.
  • Reference Example 1
  • a solar cell was manufactured in the same manner as in Example 2, except that a gold (A1) electrode was used instead of the A1 electrode of Example 2.
  • n (%) [(Voc Isc FF) / (PinX S)] x 100
  • Equation 1 Voc is a voltage when no current flows (open voltage
  • Isc is the current when the voltage is 0 (short current, mA)
  • FF Frill factor
  • Pin is The intensity of the irradiated light (100 mW / cm 2 ) and S is the area of the electrode (0.15 cm 2 ).
  • Example 1 (mA / cm 2 ) (%) Example 1 10 A1 21.40 1.00 69.17 14.80 Example 2 30 A1 22.17 1.08 64.47 15.51 Example 3 50 A1 21.62 1.03 70.23 15.64 Example 4 70 A1 19.87 1.03 72.61 14.86 Comparative Example 1-A1 22.31 0.69 32.60 5.02 Comparative Example 2 5 A1 22.20. 0.70 43.63 6.78 Comparative Example 3 100 A1 17.91 0.65 48.14 5.60 Reference Example 1 30 Au 15.33 0.47 34.00 2.45
  • the open-circuit and short-circuit current densities correspond to the X- and Y-axis intercepts of the voltage-current density curve of FIG.
  • the figure of merit (FF) is the area that can be drawn inside the curve divided by the product of the short circuit current and the open circuit voltage.
  • Table 1 and Figure 2 the solar cell of the embodiment equipped with a charge generation layer of 10 nm to 70 nm thick, the open voltage and the figure of merit is significantly improved compared to the solar cell of the comparative example, excellent light conversion efficiency It can be seen that.
  • the aluminum (A1) is used as the crab 2 electrode, the open voltage and the performance index of the solar cell are improved as compared with the case of using the gold (Au) electrode, thereby improving the light conversion efficiency.
  • first electrode 20 electron transport layer

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  • Sustainable Development (AREA)
  • Photovoltaic Devices (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

La présente invention concerne une cellule solaire de pérovskite hybride organique-inorganique qui comprend une couche de génération de charge capable d'améliorer les caractéristiques de transport de trou, le rendement de tension de circuit ouvert et de conversion énergétique de la cellule solaire pouvant être amélioré en incluant la couche de génération de charge capable d'améliorer les caractéristiques de transport de trou.
PCT/KR2017/001146 2016-02-03 2017-02-02 Cellule solaire de pérovskite hybride organique-inorganique Ceased WO2017135705A1 (fr)

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CN110483529A (zh) * 2019-08-09 2019-11-22 宁波卢米蓝新材料有限公司 一种稠杂环化合物及其应用
CN110718638A (zh) * 2018-07-11 2020-01-21 Tcl集团股份有限公司 量子点发光二极管及其制备方法
CN111092159A (zh) * 2019-12-13 2020-05-01 固安翌光科技有限公司 一种有机半导体器件及其连接结构
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CN110718638A (zh) * 2018-07-11 2020-01-21 Tcl集团股份有限公司 量子点发光二极管及其制备方法
CN110718638B (zh) * 2018-07-11 2020-12-01 Tcl科技集团股份有限公司 量子点发光二极管及其制备方法
CN110483529A (zh) * 2019-08-09 2019-11-22 宁波卢米蓝新材料有限公司 一种稠杂环化合物及其应用
CN110483529B (zh) * 2019-08-09 2021-04-13 宁波卢米蓝新材料有限公司 一种稠杂环化合物及其应用
CN111092159A (zh) * 2019-12-13 2020-05-01 固安翌光科技有限公司 一种有机半导体器件及其连接结构
CN111092159B (zh) * 2019-12-13 2023-08-11 固安翌光科技有限公司 一种有机半导体器件及其连接结构
CN114318359A (zh) * 2021-11-15 2022-04-12 隆基绿能科技股份有限公司 光电极、光电解水装置和使用其的能量系统以及光电解水的方法
CN114318359B (zh) * 2021-11-15 2024-05-14 无锡隆基氢能科技有限公司 光电极、光电解水装置和使用其的能量系统以及光电解水的方法
CN115568233A (zh) * 2022-09-27 2023-01-03 山东大学 一种钙钛矿本征偶极子定向排列的有机-无机钙钛矿太阳能电池及其制备方法

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